Home / 65,417.28-90,306.24-38,550.72

Finding the Fourth Proportional to 65,417.28, 90,306.24 and 38,550.72

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Solution

The fourth proportional to 65,417.28, 90,306.24 and 38,550.72 is: 53,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,417.28 : 90,306.24 = 38,550.72 : x
  2. Step 2: Convert to fraction form
    65,417.28/90,306.24 = 38,550.72/x
  3. Step 3: Cross multiply
    65,417.28x = 90,306.24 × 38,550.72
  4. Step 4: Simplify right side
    65,417.28x = 3,481,370,572.49
  5. Step 5: Solve for x
    x = 3,481,370,572.49/65,417.28
  6. Step 6: Final answer
    x = 53,217.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.